Assessor's Office - Stanislaus County

Assessor's Office - Stanislaus County Address: 1010 10th Street, Ste. 2400 Modesto, CA 95354 Phone: (209) 525-6461 Mon - Fri: 8:00am - 4:30pm Closed Saturdays, Sundays & Holidays ASSESSOR E-FILE IS NOW OPEN FOR THIS YEAR You may login using the information from your On-line Property Statement Letter. You should receive your letter by February 15th. 2026-27 Assessment Roll Preparation The Assessor's Office is now working to prepare the 2026-27 regular assessment roll, which will be delivered to the Auditor-Controller in late June of 2026. Roll values for the 2026-27 Roll will reflect all factors affecting property value as of 12:01 AM on January 1, 2026. In December we sent out annual exemption claim forms for known claimants who are required to file annually. We also recently sent out annual business and agricultural property statement filing requests. 2026 Exemption Claim Filings - Due Tuesday February 17, 2026 The annual exemption claim filing deadline is extended this year to: Tuesday, February 17, 2026 In the last week of December, the Assessor's office mails out annual property Exemption Claim forms to all known claimants. Claims for the Welfare Exemption (for qualifying non-profit agencies, including some church properties), Church Exemption, Lessor Exemption, Cemetery Exemption, Library/Museum Exemption, Historic Aircraft Exemption, Public School Exemption, College Exemption and the low-income Disabled Veterans' Exemption must be filed annually. The basic Disabled Veterans' Exemption, Homeowners' Exemption and Religious Exemptions are all one-time filings. Our office does, however, send out an annual questionnaire to existing claimants of the Religious Exemption to determine if any information has changed. As required by law, and as changes in ownership are processed in our office, the Assessor also mails Homeowner Exemption claim forms to all buyers of residential property. To qualify for a 2026 Homeowner Exemption, the home must be owner occupied as of 12:01 AM January 1, 2026. 2026 Property Statement Filings - Due April 1, 2026, Subject to penalty after May 7, 2026 All Property Statements are due April 1, 2026, and subject to penalty after May 7, 2026 Annual Property statement filing requests are mailed to all known business/agricultural property owners by the end of January. All Business owners and existing Agricultural property online filers will receive an instruction/request letter providing them with a BIN (Business Identification Number) necessary to access our online filing system. Agricultural Property owners who did not previously file online will receive a paper statement and instructions for online filing. I encourage all filers to take advantage of the benefits of online filing. Owners of apartment complexes, boats and aircraft will only receive a paper statement. As the elected Assessor of Stanislaus County, it is my sworn responsibility to uphold the State's Property Tax Laws. Our website is an ongoing part of my commitment to keeping you informed of your rights and responsibilities as property owners in Stanislaus County. About Us - Who We Are The Assessor is primarily responsible for preparing an annual assessment roll upon which property tax revenues are generated. The County, Public Schools, Cities, Redevelopment Agencies, and Special Districts all rely on this revenue for funding operations. What We Do All property, excluding supplies, movable equipment, boats, and aircraft, are assessed based upon their market value when purchased or newly constructed. The Assessor determines the market value for the ownership changes and new construction. The supplies, movable equipment, boats, and aircraft are assessed based upon their annual market value on January 1 of each year. The Assessor also maintains property parcel maps. These maps are available to the public in the Assessor's Office or at the County's web site. What We Offer The mission of the Stanislaus County Assessor's office is to produce a fair, accurate and timely assessment roll while providing excellent customer service. Fee-based annual data subscriptions are also available.